Home / 30,629.40-45,919.80-16,778.40

Finding the Fourth Proportional to 30,629.40, 45,919.80 and 16,778.40

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Solution

The fourth proportional to 30,629.40, 45,919.80 and 16,778.40 is: 25,154.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.40 : 45,919.80 = 16,778.40 : x
  2. Step 2: Convert to fraction form
    30,629.40/45,919.80 = 16,778.40/x
  3. Step 3: Cross multiply
    30,629.40x = 45,919.80 × 16,778.40
  4. Step 4: Simplify right side
    30,629.40x = 770,460,772.32
  5. Step 5: Solve for x
    x = 770,460,772.32/30,629.40
  6. Step 6: Final answer
    x = 25,154.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.